A book bound in strange copper. The cover is made of beaten copper and it bears engraved lightning motifs, which suggest it originates from the time of the Storm Kings.
It is locked with a puzzle-lock. It needs a the Storm Key to be opened; forcing it may destroy the book.
- The Thundersheaves
- The Thunderglass
When ends the Long Summer, know that the Long Night shall be marked by the burning of a star in the sky. Witness its red fire both day and night…
And Grobart found in the wake of the storm upon the sand a great plate of glass, and struck by lightning. He had it made into a great mirror...
This is the Stormglass, wrought to reveal the light in the dark of the storm. Retrieve it when the prophecies of the Long Night are upon us.
The remainder of the Thundersheaves contains dreams and prophecies, accounts of ancient Storm Kings and other lords of the Stormlands.